There are many clinical causes of numbness in the fingertips. If the numbness is simple, it may be caused by prolonged holding the same posture or nerve pressure. If the numbness of the fingertips is heavy, regular and recurrent, it may be caused by diseases such as neuropathy. Physiological causes: prolonged stay in the same position, such as sleeping or holding a cell phone to maintain a certain posture, resulting in the superficial nerve compression of the hand, or cold, then not only the fingertips will be numb, the whole hand will appear numb feeling. Second, pathological factors: mainly caused by nerve damage. 1, neck diseases: patients with cervical spondylosis, cervical disc herniation, etc. can compress the cervical nerve roots, resulting in patients with numbness in the hands; 2, endocrine diseases: such as diabetes, abnormal thyroid function, etc., may cause numbness in the fingertips due to vascular occlusion or lesions; 3, cerebrovascular diseases: transient cerebral ischemia, cerebral infarction and other cerebrovascular diseases can affect the Nervous system, resulting in symptoms of hand numbness; 4, hand nerve damage: ulnar nerve, radial nerve and median nerve, these three nerves are the main nerves in the hand, any one of the pressure or damage will lead to finger numbness. For example, patients with “mouse hand”, that is, carpal tunnel syndrome is the median nerve compression, resulting in numbness of finger tips; 5, connective tissue diseases: such as systemic lupus erythematosus, in addition to numbness of finger tips, there will be fever and muscle and joint pain; 6, nutritional disorders: such as B vitamin deficiency, resulting in nerve nutrition obstructed, susceptible to peripheral neuritis, and may be accompanied by systemic malnutrition. It is recommended that patients pay attention to the combination of work and rest when using hand labor. In addition, those who cannot be relieved after proper rest do not rule out pathological factors, and need to identify the cause for treatment as soon as possible to avoid delays.